MDO3000 Programmer Manual.pdf - 第992页
Commands Listed in A lphabetical Order Examples WFMOUTPRE:BN_ FMT RP specifies that outgoing wave form data will be in positive integer format. WFMOUTPRE:BN _FMT? might return :WFMOUTPRE :BN _FMT RI indicating that the ou…
Commands Listed in Alphabetical Order
Syntax
WFMOutpre:BIT
_Nr <NR1>
WFMOutpre:BIT_Nr?
Related Commands
DATa:SOUrce,
DATa:WIDth,
WFMOutpre:BYT_Nr
Arguments
<NR1> is the number of bits per data point and can be 8, 16, 32 or 64.
Examples
WFMOUTPRE:BIT_NR 16 sets the number of bits per waveform point to 16 for
outgoing waveforms.
WFMOUTPRE:BIT_NR? might return : WFMOUTPRE:BIT_NR 8 indicating that
outgoing waveforms use 8 bits per waveform point.
WFMOutpre:BN_Fmt
This command specifies the format of the binary data for outgoing waveforms
when
WFMOutpre:ENCdg is set to BINary. The format can be RI (signed integer)
or RP (positive integer) for analog channels, and FP for RF frequency domain
traces. Changing the value of WFMOutpre:BN_Fmt also changes the value of
DATa:ENCdg. The waveform is specified by the DATa:SOUrce command.
(See page 2-95, Waveform Transfer Command Group.)
(See page D-1, Wa veform Transfer (WFMOutpre and CURVe Query) Examples.)
Group
Waveform Transfer
Syntax
WFMOutpre:BN_Fmt {RI|RP|FP}
WFMOutpre:BN_Fmt?
Related Commands
DATa:ENCdg,
DATa:SOUrce
Arguments
RI specifies signed integer data point representation.
RP specifies positive integer data point representation.
FP specifies floating point data representation
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-961
Commands Listed in Alphabetical Order
Examples
WFMOUTPRE:BN_
FMT RP
specifies that outgoing waveform data will be in positive
integer format.
WFMOUTPRE:BN
_FMT?
might return :WFMOUTPRE :BN_FMT RI indicating that
the outgoing waveform data is currently in signed integer format.
WFMOutpre:BYT_Nr
This command specifies the data width for the outgoing waveform specified by the
DATa:SOUrce command. (This command is synonymous with
:DATa:WIDTH.)
Note that changing WFMOutpre:BYT_Nr also changes WFMOutpre:BIT_Nr
and DATa:
WIDth.
(See page 2-95, Waveform Transfer Command Group.)
(See page D-1, Waveform Transfer (WFMOutpre and CURVe Query) Examples.)
NOTE. The
WFMOutpre:BYT _Nr
and
WFMOutpre:BIT _Nr
settings are
direct
ly related; setting one causes the other to be set accordingly. For
example,
WFMOutpre:BY T_Nr 2
causes
WFMOutpre_B IT_Nr
to be set to
16 (2 * 8 bits/byte). Similarly, setting
WFMOutpre: BIT_Nr
to 16 causes
WFMOutpre: BYT_Nr
to be set to 2.
Group
Waveform Transfer
Syntax
WFMOutpre:BYT_Nr <NR1>
WFMOutpre:BYT_Nr?
Related Commands
DATa:SOUrce,
DATa:WIDth,
WFMOutpre:BIT_Nr
Arguments
<NR1> is the number of bytes per data point. The number of bytes can be 1 or 2
for Analog, Math or the digital channels D0 – D15. It can be 4 or 8 for DIGital
collection data. It must be 4 for frequency domain trace data.
Examples
WFMOUTPRE:BYT_NR 1 sets the number of bytes per outgoing waveform data
point to 1, which is the default setting.
WFMOUTPRE:BYT_NR? might return :WFMOUTPRE:BYT_NR 2 indicating that
there are 2 bytes per outgoing waveform data point.
2-962 MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual
Commands Listed in Alphabetical Order
WFMOutpre:BY
T_Or
This command specifies which byte of outgoing binary waveform data is
transmitted first (the byte order). The byte order can either be MSB (most
significant b
yte first) or LSB (least significant byte first, also known as IBM
format). This specification only has meaning when WFMOutpre:ENCdg is set
to BINary and WFMOutpre:BYT_Nr is 2. Changing WFMOutpre:BYT_Or also
changes DATa:ENCdg (if DATa:ENCdg is not ASCIi).
(See page 2-95, Waveform Transfer Command Group.)
(See page D-1, Wa veform Transfer (WFMOutpre and CURVe Query) Examples.)
Group
Waveform Transfer
Syntax
WFMO
utpre:BYT_Or {LSB|MSB}
WFMOutpre:BYT_Or?
Related Commands
WFMOutpre:ENCdg,
WFMOutpre:BYT_Nr
Arguments
LSB specifies that the least significant byte will be transmitted first.
MSB specifies that the most significant byte will be transmitted first.
Examples
WFMOUTPRE:BYT_OR MSB sets the most significant outgoing byte of waveform
data to be transmitted first.
WFMOUTPRE:BYT_OR? might return :WFMOUTPRE:BYT_OR LSB indicating that
the least significant data byte will be transmitted first.
WFMOutpre:CENTERFREQuency? (Query Only)
This query returns the center frequency of the incoming waveform. For non-MDO
models, this query always returns 0.
The center frequency is a precise frequency at the center of the display of the
frequency domain graticule. In many applications, it is a carrier frequency.
Conditions
MDO3000, MDO4000/B, or MDO4000C models with option SA3 or SA6 only.
Group
Waveform Transfer
MDO4000/B/C, MSO/DPO4000B and MDO3000 Series Oscilloscopes Programmer Manual 2-963